f55 Cluster mph to kmh

[Envi4]

I can't figure out how to change the language of my dashboard and from mph to kmh f55 Cluster

void BMWFSeriesCluster::updateLanguageAndUnits() {
uint8_t message1[] = { 2, 18, 1, 0x00, 0x00, 0x00, 0x00, 0x00 };
CAN.sendMsgBuf(0x291, 0, sizeof(message1), message1);
}

I tried many options, but none worked with

[r00li]

Well, this snippet should do it. But you need to actually call this function. I have this piece of code in there for cases where you want to do it, but it is not actually getting called anywhere.